package jdbc;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public class LoginDemo {
    public static void main(String[] args) {
        UserInfo userInfo = InputUtil.getInputObject(new UserInfo(), "欢迎登陆","登陆");
        try (Connection connection = DBUtil.getConnection();){
            Statement statement =connection.createStatement();
            String sql = "SELECT id,username,password,nickname,age " +
                    "FROM userinfo " +
                    "WHERE username='"+userInfo.getUsername()+"' AND password='"+userInfo.getPassword()+"'";
            ResultSet rs = statement.executeQuery(sql);
            if(rs.next()){
                System.out.println("登录成功，欢迎你:"+rs.getString("nickname"));
            }else{
                System.out.println("登录失败，用户名或密码不正确");
            }
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }

        System.out.println(userInfo);
    }
}
